Window screen



Dec. 4, 1956 G. KORBA WINDOW SCREEN Filed May 21, 1954 Z-SheetS-Sheet 1l L4 .J

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. INVENTOR. a'oaca, KORBA K BY VIII/l ATTO Q N EY-s United States PatentWINDOW SCREEN George Korba, Lynwood, Calif.

Application May 21, 1954, Serial No. 431,425

3 Claims. (Cl. 160-28) The present invention relates to new and usefulimprovements in roller type window screens and in particular concernsitself with a roller screen having an easily accessible casing orhousing which is locked in place against theft or accidentaldisplacement when the sash of the window where it is used is in closedposition.

The principal object of the present invention is to provide a simplyconstructed housing and roller mechanism to house and retract a screenof plastic or other flexible materials, and one which is weather-prooffor the protection of the screen and roller when in non-use position.

Another object of the present invention is to provide a screen which israised by movement of the lower sash of the window, but may be similarlysecured to the window frame above the upper sash and attached theretofor movement downwards when the upper sash is lowered.

A further object of the present invention is to provide a window screenof the roller type which extends across the fulL window opening and onein which its channel guides on each side occupy little or no more spaceoutwardly than the usual parting strips between the upper and lowersash.

A still further object of the present invention is to provide a housingfor a roller screen which interlocks with the sash when in closedposition, making impossible the removal of the housing from the frame,and providing therefore an additional safeguard against illegal entrythrough the window, the forcible removal of the housing or screen notbeing possible without the attendant noise and commotion which generallyis a deterrent.

With the above objects and advantages in view and such other objects andfeatures as may become apparent as this specification proceeds, theinvention consists essentially in the arrangement and construction ofparts as illustrated in the accompanying drawings, in which:

Figure 1 is a general plan view in elevation of an embodiment of thepresent invention installed attached to the lower sash in a windowframe;

Figure 2 is a vertical view in cross section taken on line 22 of Figure1;

Figure 3 is a side view in cross section taken on line 33 of Figure 1;

Figure 4 is a partial side view in cross section taken on line 4-4 ofFigure 1;

Figure 5 is a partial vertical view in cross section taken on line 5-5of Figure 1;

Figure 6 is an end view in cross section showing the interlocking partswhen the window sash is in closed position, and

Figure 7 is an exploded view of related parts showing theirinterrelation and mode of attachment.

Referring in greater detail to the drawing in which like numbersindicate like parts throughout the several views, in Figure 1 a windowframe is indicated at 10 and shows a lower sash 11 and an upper sash 12,the window sash 11 being raised and supporting along its lower end the2,772,731 Patented Dec. 4, 1956 upper edge of a flexible screen 13,secured thereto by the screws 14, seen in side view in Figure 4.

The screen 13 is secured at its other end by cement or other means tothe roller 15, seen most clearly in the exploded view of Figure 7, andhas along one side edge 16 the plastic bonding or sizing which stiffensthe edge and permits its more or less permanent rigid sliding movementin the side channel members 17 which extend upwardly and are ofapproximately the same width and height as the parting strip of theframe, which is removed to make space for the members 17, the lower endof which is especially formed, as seen in Figure 7, with a offsetportion 18 having a forwardly bent tab 20 which overlies the lip 41 ofthe housing 21 for the purpose to be explained later.

The roller 15 is supported on a shaft 22, one at each end, which issolidly secured by its one end in the center of the bracket 23, theother or free end of the shaft 22 being longitudinally slotted asindicated at 24 to receive the inner end 25 of the coil spring 26, theouter end 27 of which is upwardly bent to form a tab which is engaged inthe slot 28 in the roller 15. A bearing 29 in each end of the roller 15,although only one end of the roller is illustrated herein, is adjacentto the spring 26 and acts to support the roller on the shafts 22, itbeing a pressure fit between the roller and bearing and between thebearing and shaft, as is conventional.

The brackets 23, one on each side of the window frame in which the frontguide strip 30 is cut away as indicated at 31 in Figure 3, are formed ofsheet metal having one vertical edge bent outwardly to occupy theopening formed by the cutout portion 18, as seen most clearly in Figure7, and are secured in the parting strip channel by a nail or screw 32through the hole 33.

The housing 21 is seen to consist of a somewhat rectangular elongatedhousing having one vertical wall 34 and with its top panel 35 and bottompanel 36 in substantial parallelism, but sloping outwardly at the sameangle as the sloping window sill 37, shown with somewhat an exaggeratedslope in Figure 6. At each end of the housin 21, a slot 38 is formed byturning the end edges slightly outward as at 39 and then back on itself,the three slots thusly formed in the vertical wall 34 and each of thetop and bottom panels 35, 36, respectively, receiving the edges of thebrackets 23, and the downwardly turned end edge 39 of the bottom panel36 supports the housing 21 slightly upwardly above the surface of thesill 37, for ventilation of the painted surface and evaporation of anyentrapped moisture so common to surfaces exposed to the weather.

The housing 21 has its upper side edge of the top panel formed into anupstanding lip 41 which is received into the channel strip 42 which ispositioned to overlie the upper end edge of the screen 13 but projectsby its shorter side 43 outwardly enough to also overlie the lip 41 whenthe sash is lowered to closed position. It is understood that thedimensions of the housing, lip and placement of the channel strip 42 besuch that the sash is completely lowered to a position where theconventional lock is operable, it then being obvious that the channelstrip 42 locks the housing 21 on the brackets 23, preventing removal ofthe housing or the screen from its position, the channel strip 42 havingaperatures through which the screws 14 secure the screen to the sash, asstated above. The tab 20 on the lower end of the members 17 furtherlocks the housing 21 to the brackets 23 and adds to the weatherproofingof the device.

It is understood that the spring is wound in the direction that willnormally tend to move the screen back into the housing, and that othermeans may be used to secure the roller to the spring and the spring tothe shaft, this illustration being of only one embodiment of theinvention and other embodiments are, contemplated and may be practicedwithout departing from the spirit and scope of the present invention asdefined in the appended claims.

What is claimed is:

1. In combination, a window frame having vertical side members havinglower ends, a sill extending between said lower ends, and a verticallyslidable sash mounted on said vertical side members, said sash having alower end and an outer side, a housing superimposed upon said sill andextending between said vertical side members, said housing having openends, a top panel, an outer panel, and a bottom panel, and being devoidof an inner panel and being open at its inner side, said top panel andbottom. panel having facing slots at the open ends of the housing,bracket plates secured to the frame side members at the lower ends ofthe side members near the sill at points outwardly of said sash, saidbracket plates having upper and lower edges engaged removably in saidfacing slots with the bracket plates closing the open ends of thehousing, a roller within the housing, means on the bracket platesmounting the roller at its ends, and a flexible screen circumposed onsaid roller and secured thereto at one end, the roller having anotherend extending through the open inner side of the housing, and meanssecuring the said other end of the screen to the outer side of the sashat its lower end.

2. In combination, a window frame having vertical side members havinglower ends, a sill extending between said lower ends, and a verticallyslidable sash mounted on said vertical side members, said sash having alower end and an outer side, a housing superimposed upon said sill andextending between said vertical side members, said housing having openends, a top panel, an outer panel, and a bottom panel, and being devoidof an inner panel and being open at its inner side, said top panel andbottom panel having facing slots at the open ends of the housing,bracket plates secured to the frame side members at the lower ends ofthe side members near the sill at points outwardly of said sash, saidbracket plates having upper and lower edges engaged removably in saidfacing slots with the bracket plates closing the open ends of thehousing, a roller within the housing, means on the bracket platesmounting the roller at its ends, and a flexible screen circumposed onsaid roller and secured thereto at one end, the roller having anotherend extending through the open inner side of the housing, andmeanstsecuring the said other end of the screen to the outer side of thesash at its lower end, said securing means comprising an outwardlyprojecting flange terminating in a depending flange, and said top panelof the housing having an upstanding lip extending therealong over whichsaid depending flange engages in a lowered position of said sash.

3. In combination, a window frame having vertical side members havinglower ends, a sill extending between said lower ends, and a verticallyslidable sash mounted on said vertical side members, said sash having alower end and an outer side, a housing superimposed upon said sill 'andextending between said vertical side members, said housing having openends, a top panel, an outer panel, and a bottom panel, and being devoidof an inner panel and being open at its inner side, said top panel andbottom panel having facing slots at the open ends of the housing,bracket plates secured to the frame side members at the lower ends ofthe side members near the sill at points outwardly of said sash, saidbracket plates having upper and lower edges engaged removably in saidfacing slots with the bracket plates closing the open ends of thehousing, a roller within the housing, means on the bracket plates,mounting the roller at its ends, and a flexible screen circumposed onsaid roller and secured thereto at one end, the roller having anotherend extending through the open inner side of the housing, and meanssecuring the said other end of the screen to the outer side of the sashat its lower end, said securing means comprising an outwardly projectingflange terminatio in a depending flange, and said top panel of thehousing having an upstanding lip extending therealong over which saiddepending flange engages in a lowered position of said sash, and avertical channel guide secured to a frame side member above saidhousing, said screen having a side edge slidably engaged in the channelguide and the guide having a lower end provided withan outset tabengaged over the upstanding lip on the housing.

References Cited in the file of this patent UNITED STATES PATENTS1,177,434 Montgomery Mar. 28, 1916 1,471,534 Smythe Oct. 23, 19231,781,202 Stern Nov. 11, 1930

